755027-18-0Relevant articles and documents
Using Nature's polyenes as templates: studies of synthetic xanthomonadin analogues and realising their potential as antioxidants
Madden, Katrina S.,Jokhoo, Hans R. E.,Conradi, Fabian D.,Knowles, Jonathan P.,Mullineaux, Conrad W.,Whiting, Andrew
supporting information, p. 3752 - 3759 (2019/04/17)
Two truncated analogues of the polyenyl photoprotective xanthomonadin pigments have been synthesised utilising an iterative Heck-Mizoroki (HM)/iododeboronation cross coupling approach and investigated as models of the natural product photoprotective agent
Transition-metal-free decarboxylative bromination of aromatic carboxylic acids
Quibell, Jacob M.,Perry, Gregory J. P.,Cannas, Diego M.,Larrosa, Igor
, p. 3860 - 3865 (2018/04/26)
Methods for the conversion of aliphatic acids to alkyl halides have progressed significantly over the past century, however, the analogous decarboxylative bromination of aromatic acids has remained a longstanding challenge. The development of efficient methods for the synthesis of aryl bromides is of great importance as they are versatile reagents in synthesis and are present in many functional molecules. Herein we report a transition metal-free decarboxylative bromination of aromatic acids. The reaction is applicable to many electron-rich aromatic and heteroaromatic acids which have previously proved poor substrates for Hunsdiecker-type reactions. In addition, our preliminary mechanistic study suggests that radical intermediates are not involved in this reaction, which is in contrast to classical Hunsdiecker-type reactivity. Overall, the process demonstrates a useful method for producing valuable reagents from inexpensive and abundant starting materials.
Progress Toward a Semi-Synthetic Organism with an Unrestricted Expanded Genetic Alphabet
Dien, Vivian T.,Holcomb, Matthew,Feldman, Aaron W.,Fischer, Emil C.,Dwyer, Tammy J.,Romesberg, Floyd E.
supporting information, p. 16115 - 16123 (2018/11/23)
We have developed a family of unnatural base pairs (UBPs), exemplified by the pair formed between dNaM and dTPT3, for which pairing is mediated not by complementary hydrogen bonding but by hydrophobic and packing forces. These UBPs enabled the creation of